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我有用於讀取數據庫的應用程序。代碼工作完美，但是當我使用if .. then ... else ImageView它不起作用。可能是我正在使用我的代碼。任何人都可以幫助我解決我的代碼？圖片在android中不能更改
我的屏幕拍攝應用http://prntscr.com/beuid8
這樣
Toolbar toolbar;
ImageView image;
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
private ListView listView;
ArrayList<HashMap<String, String>> productsList;
// url to get all products list
private static String url_all_products = "http://192.168.1.111/log_inputitem.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "inputitemlog";
private static final String TAG_LOGO = "Item Logo";
private static final String TAG_NAME = "Name";
private static final String TAG_CODEITEM = "Item Code";
private static final String TAG_UPGRADEITEM = "Item Upgrade";
private static final String TAG_DATEITEM = "Item Date";
// products JSONArray
JSONArray products = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_logitem);
// ListView listView = (ListView) findViewById(android.R.id.list);
// Hashmap for ListView
productsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
toolbar = (Toolbar) findViewById(R.id.toolbar);
image = (ImageView) findViewById(R.id.thumbnail);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//listView = (ListView) findViewById(R.id.lista);
TypedValue typedValueColorPrimaryDark = new TypedValue();
ListLogItem.this.getTheme().resolveAttribute(R.attr.colorPrimary, typedValueColorPrimaryDark, true);
final int colorPrimaryDark = typedValueColorPrimaryDark.data;
if (Build.VERSION.SDK_INT >= 21) {
getWindow().setStatusBarColor(colorPrimaryDark);
}
}
// Get listview
protected ListView getListView(){
if (listView == null) {
listView = (ListView) findViewById(R.id.logitem);
}
return listView;
}
// Response from Edit Product Activity
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// if result code 100 is received
// means user edited/deleted product
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, Void, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ListLogItem.this);
pDialog.setMessage("Loading. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String logo = c.getString(TAG_LOGO);
String name = c.getString(TAG_NAME);
String codeitem = c.getString(TAG_CODEITEM);
String upgradeitem = c.getString(TAG_UPGRADEITEM);
String dateitem = c.getString(TAG_DATEITEM);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_LOGO, logo);
map.put(TAG_NAME, name);
map.put(TAG_CODEITEM, codeitem);
map.put(TAG_UPGRADEITEM, upgradeitem);
map.put(TAG_DATEITEM, dateitem);
// adding HashList to ArrayList
productsList.add(map);
}
} else {
Toast.makeText(getApplicationContext(), "Doesn't have log item now", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
//runOnUiThread(new Runnable() {
// public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
ListLogItem.this, productsList,
R.layout.list_inputitem, new String[]{
TAG_LOGO, TAG_NAME, TAG_CODEITEM, TAG_UPGRADEITEM, TAG_DATEITEM},
new int[]{R.id.thumbnail, R.id.title, R.id.rating, R.id.genre, R.id.releaseYear});
if (TAG_LOGO == "ig"){
image.setImageResource(R.drawable.flat);
}
// updating listview
getListView().setAdapter(adapter);
//}
// });
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
getMenuInflater().inflate(R.menu.menu_news, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
任何人我的代碼可以幫助我，使我的ImageView的工作？ 之前感謝